USGS Water-Year Summary 2024
404949099445701 10N 21W 18DDD Lexington
High Plains aquifer
Sand and Gravel Deposits
LOCATION - Lat 40°49'48.56", long 99°44'59.56" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 SE 1/4 sec.18, T.10 N., R.21 W., Dawson County, NE, Hydrologic Unit 10200101, 3.5 mi north of the intersection of Route 21 and U.S. Highway 30 in Lexington.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 120 ft. Upper casing diameter 6 in; top of first opening undefined, bottom of last opening undefined.
DATUM - Land-surface datum is 2,421.92 ft above North American Vertical Datum of 1988. Measuring point: Surveyed MP height is mark on south edge of casing, 0.5 ft above land-surface datum, Jul. 1, 1964 to present.
PERIOD OF RECORD - July 1964 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 3.13 feet below land surface datum, July 10, 2019; lowest, 22.95 feet below land surface datum, September 8, 2023.